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WORKSHOP - MICROBIOLOGICALLY INFLUENCED CORROSION: FACTS AND MYTHS

  !! Can bacteria get adapted to biocides so that every now and then it must be changed? !!    Are non-metals (particularly, composite and plastics) immune to MIC? !!   What is the likely MIC mechanism in soil environments ? Why should I ATTEND?   Microbiologically influenced corrosion (MIC) is a unique type of corrosion with the microbes being the reason for the corrosion to occur, rather than a traditional corrosion cell. MIC is a known issue in many strategic industries such as, but not limited to pipelines, refineries, powerplants, and even PV solar panels. However, MIC is still a significant source of confusion. Hence, it is crucial to get hands-on skills and knowledge to define and cure it more effectively through more realistic prevention/mitigation integrity strategies based on general corrosion technology. What will I learn? “Six important myths currently accepted and used by industry” Electrochemistry in corrosion Relevance of electrochemistry to...

Thesis flowchart...aka...How to decide what to write first in your thesis?

It was that moment in my thesis writing when I had received a terrible feedback and was asked to overhaul the entire document. It was time to take a break from the screen and go back to basics. I printed out my document and went home. Then I took a break that evening, because it is one of the most underrated but essential things to get everything into perspective. The next day I proceeded to lay out the pages of my thesis chapter-wise on the table. Then I took a blank paper and pad. I thought, "How will I explain my work to my family members in my native language?" So I decided to write down my work in my native language in the form of an algorithm and then rearrange my thesis. I answered the following questions to do so - What is the issue? Where is it encountered? Is it very common? What makes it so very important? What are the steps that people have already taken to solve it? Why have they not been that effective? What is it that I did to solve the issue? How did I do it? ...

Electrochemical testing - 2 - What is a reference electrode?

What is a reference electrode? A reference electrode is used as a scale to measure the potential of the working electrode. Reversible reactions Just as a scale is unchanging, the potential and chemical conditions of the reference electrode should also be unchanging. Thus, it is necessary that the reactions - oxidation and reduction -  occurring inside a reference electrode are reversible. This ensures constant chemistry. No polarization It also ensures that there is no net polarization as both reactions occur simultaneously at different points in the reference electrode. this keeps its potential constant. Thus, the potential of any working electrode connected to this reference electrode will be dependent only on the conditions of the working electrode. This makes it easier to note the changes happening in the working electrode. Check out the video for a detailed explanation Done? Click here for Part 1 and PART 3 ! NOW, Are you ready to test your corrosion knowledge?   Click h...

Abbreviation day - EN 50125-1 Standard for Railways

 EN 50125-1 Standard for Railways 🔴 With so many short forms used in our work all around, it gets confusing and it is also not possible to remember/know all of them. So here's something new. 🔴 I will take up one short form/standard name and describe in a couple of lines what it is. Some of you may be familiar with some of the common ones. Today it is 📌 EN 50125-1 📌 🔴 EN stands for European standards. 🔴 EN 50125-1 is the standard used in railways to determine if the equipment (material, design) is compatible with the environmental conditions in Europe. 🔴Simply put, if you are in charge of design and manufacturing of a railway part, you have to look at this standard to see the environmental condition in the area of operation of the train. 🔴 The selection of the material, design, surface treatments, have to be then decided depending on how severe the environment is (sunny/cold/wind/snow etc.) Check out the free corrosion quizzes  here ! https://corrospective.com/ 😀Happy ...

Coupon test for corrosion inhibitors

Concept Coupon test is used to gauge a material's corrosion rate in a corrosive environment. It is also used to test the efficiency of corrosion inhibitors. Parameters Material - The coupons are made from the same or similar material as that of the actual component Electrolyte - The electrolyte for exposure is the same or similar to the actual environment. Sometimes, coupons are placed in the actual environment with the component, for example in the soil with submerged pipelines. Steps Clean the coupon of any oil/grease/rust Measure the weight of original coupon - W Measure the Area of coupon to be exposed - A. Take photographs and/or optical micrographs of the coupon Immerse the coupon in the electrolyte without inhibitor Note the time of measurement - t. This is decided by the concerned parties or as per the standards followed. Take out the coupon after the time. Take photographs and/or optical micrographs of the coupon Clean the corrosion products off the coupon. DO NOT USE ROUG...

3 steps to begin experiments...aka...I am lost in this lab!

  All the students in the first few days of research are faced with the dilemma of the right time and way to begin experimentation. There are as many ways and thought processes to do so as there are people. I will share my learnings here. The problem is that the literature review tends to become so vast that it is difficult to decide what the exact problem is. 1. The best way is to NOT WAIT for the literature review to get over. Begin with the experiments simultaneously. Gain experience on as many new techniques as possible. 2. Start with that research paper which will most likely form the basis of your work. Attempt to reproduce the experiments in the paper. Try to see what other experiments can corroborate those results. 3. Select the correct research papers to continue the literature review. P.S. All the experiments should have a reason for doing them. You should be able to answer the question 'Why should I do this experiment? What will I learn?'

Corrosion risk planning - 2 - Above ground storage tanks - oil and gas- PART 2

 Above ground storage tanks - PART 2 9.      Splash plate corrosion at welds atmospheric corrosion coating damage, if applicable pitting due to chloride salt deposition in marine environment 10.      Spiral staircase corrosion at welds of individual bars and critical joints to the tank coating damage and delamination cracks near welds uniform corrosion at exposed surface near delamination galvanic corrosion near weld/staircase/tank interface due to dissimilar alloys 11.      Manometer corrosion of screws, nuts, and bolts used for attachment possible moisture penetration in case of cracks due to improper handling 12.      Manhole Internal corrosion due to water either as a moisture or as storage product External coating damage due to moisture penetration, dust, rainfall, UV radiation Coating damage at fixtures and edges galvanic corrosion at nuts and bolts due to dissimilar alloys atmospheric corrosion at area where coating...